Portable radio antenna



April 14, 1931. E 1-], HAND PORTABLE RADIO ANTENNA Filed Dec. 27, 1927 INVENTQR Ell ATTORNEY Patented Apr. 14, 1931 ERLE H. HAND, OF NEW YORK, N. Y.

PORTABLE name ANTENNA Application filed December 27, 1927.

This invention relates generally to radio antennas, and has more particular reference to a novel type of portable radio antenna.

The invention has for an object the pro vision of an antenna of the class mentioned which is of simple durable construction, highly efiicient in operation, and which can be manufactured and sold at a reasonable cost.

The invention antenna has a pair of parallel rods to form the apex, or spear of a winding and an upper and lower pair of parallel rods spaced from the first mentioned pair of rods, to form rear supports for the winding. A shield covers the sides of the antenna and the back, so as to only expose the open front, exposing that portion of the Winding which is upwardly and downwardly inclined from the apex. The apex pair of parallel rods may be moved relative to the rear pairs of rods so as to change the tension of the Wires of the winding. The distance between the rods forming a parallel pair is the same for all pairs of rods'so that certain portions of the winding are always parallel regardless of the positions of the adjustable apex pair of rods. Directional signals may be very accurately received, and also very selectively received by this antenna.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

eferring to the accompanying drawing, forming a material part of this disclosure.

Fig. 1 is a side view of a device constructed according to this invention.

Fig. 2 is a plan view thereof.

Fig. 3 is a vertical sectional view, taken on the line 33 of Fig. 2.

Fig. 4 is a fragmentary perspective view of the apex rods of this device.

Fig. 5 is a perspective View of the rear support rods of this device.

Fig. 6 is a fragmentary end View looking in the direction of arrows (i -6 of Fig. 3,

Serial No. 242,690.

F ig. 7 is a fragmentary vertical sectional view, taken on the line 77 of Fig. 3. Fig. 8 is a front end view of the device.

The reference numeral 10 indicates generally a pair of parallel apex rods held in s aced relation b 'oinin bars 11. The rear rod of said pair has an integral projecting rod 12 formed with a central threaded aperture 13. A shaft 15 flange 16 engaged in a thrust bearing 19 so,

has an intermediate 13 of the rod 12. tached to the free thrust bearing 19 is end 20 of a shield end A knurled knob 18 is atof the shaft 15. The

firmly attached to the rear having sides 21.

A collar 22 is freely engaged to the shaft 15, and this collar has projecting vertical arms 23 formed at their ends with joiner bars 24 holding an upper pair of rear support parallel rods 25, and a lower pair of rear support parallel rods 26. T 1e arms 23 have right angle bosses 23 and the end 20 of the bosses 23 rear pairs of parallel distance between the rods 10 distance between rods tween 10 and rods 26.

A winding 2? tions 30 and 31.

screws 28 engage to support the rods 25 and 26. The is equal to the 10 and 25 and beis wound on the rods 10, 25 and 26 so as to have upwardly tions 28 and 29, and downwardly inclined porinclined por- The knob 18 may be turned to change the tension of winding 27 by moving the apex rods 10 forward, but in all positions of the apex rods the winding portion 28 will be parallel to 29, and to 31. The shield side 20 by a stiff universal joint The portions 28, 29, 3

plane apex, or dual apex,

30 will be parallel may be connected 32 to the base 33.

O and 31 form a double and also an interior convex field and a conterior concave field.

lVhile I have above described the preferred form, construction and arrangements of the several elements employed, it will be understood that the device is,

tible of considerable nevertheless, suscepmodification therein,

and I therefore reserve the privilege of re sorting to all such changes as may be fairly embodied within the s in ention a l med.

pirit and, Scope of the universal joint,

a double apex and at the sides of the a wound on the rods pan,

Having thus described my invention, what I claim as new and desire to secure by United States Letters Patent is z- 1. A directional antenna mounted on a supporting base, a means of revolving the same on the said base, said means comprising a said antenna comprising an apex member having a pair of spaced bars, a rear support member spaced therefrom and having upper and lower pairs of spaced bars, a winding engaged on the said bars so as to have a double apex and inclined sides diverging' from the apex member, and a shield arranged at the sides and rear of the antenna.

2. A directional antenna mounted on a supporting base, a means of revolving the same on the said base, saiclmeans comprising a universal joint, said antenna comprising an apex member having a pair of spaced bars, a rear support member spaced therefrom and havingupper and lower pairs of spaced bars, a winding engaged on the said bars so as to have inclined sides diverging from the apex member, and a shield arranged antenna.

3. In a device of the class described, a pair of spaced apex rods, a rod with a threaded aperture projecting from'the rear rod of the pair, a shaft threadedly engaging the aperture, a bearing for supporting the shaft, a collar freely engaged on the shaft, vertical arms projecting from the collar,joiner bars at the ends of the arms, and rear support rods connected to the joiner bars, and a winding wound on the rods so that a portion thereof is rearwardly upwardly inclined, and another portion rearwardly downwardly inclined, the

end of the shaft is provided with a knob so that as the shaft is turned the tension of the wires of the winding is ad usted.

clined, the end of with a knob so that as the shaft is turned the tension of the wires of the winding is adjusted. 1

In testimony whereof I have aflixed my signature.

I-I. HAND.

' 4. In a device ofthe class described, a pair f V of spaced apex'rods, a shaft threadedly con nected to the rear rod or said pair of rods, a bea *ing for supporting the shaft, a collar freely engaged on the shaft, vertical arms projecting from the collar, joiner bars at the ends of the arms, and rear support rods connected to the joiner bars, and a winding is rearwardly upwardly inclined, and another portion rearwardly downwardly inclined, the

end of the shaft is provided with a knob so that as theshaft is turned the tension of the wires of the winding is adjusted.

of spaced apex rods, a rod with a threaded aperture projecting from the rear rod of the a shaft threadedly engaging the aperture, a bearing for supporting the screw shaft, a collar freely engaged on the shaft, joiner arms supported from the collar, and rear support rods connected to the joiner bars, and a winding wound on the rods so that a portion thereof is rearwardly upwardly inclined, and another portion rearwardly downwardly inso that a portion thereof o. In a device of the class described, a pair 7 the screw shaft is provided, 

